Articles in Linux | UserComp.com

Configuring UFW Firewall with Mastodonbot on Raspberry Pi

Learn how to configure UFW firewall on Raspberry Pi to securely run Mastodonbot, a Mastodon instance in a local network.

Troubleshooting: Executing Commands with Sudo for Different Users

This article discusses how to execute commands using Sudo for different users on a Linux system. The article covers the common issue of 'command not found' errors and provides a solution using the '-l' flag or by adding the user to the sudoers file.

Understanding Linux Permissions: An In-depth Look at SELinux, OpenSSH, Systemd, Docker, and RPM-based Builds

In this tech support article, we will discuss the various permissions-related components in a typical Linux user-land application build system, including SELinux, OpenSSH, Systemd, Docker, and RPM-based builds.

Troubleshooting ARP Requests with Addresses Outside Subnet on Linux Router

Learn how to diagnose and resolve ARP requests with addresses outside the subnet on a Linux router.

QEMU 5.2: Error - Property 'pc-q35-5.2-machine.i8042' not found in Windows host

This article discusses an issue encountered when running QEMU 5.2 on a Windows host, where the 'pc-q35-5.2-machine.i8042' property is not found. Solutions include using different host machines or enabling hardware acceleration.

Splitting MPEG-TS Stream into Two Different Outputs using FFmpeg

Learn how to split an MPEG-TS stream into two separate outputs using FFmpeg. This guide covers the process for creating two different outputs, one with MPEG-TS stream and AC3 audio.

SFTP Connection Stuck: Troubleshooting 'ls0[Connecting...]' Issues

Experiencing issues with an SFTP connection getting stuck during the 'ls0[Connecting...]' process? Learn potential causes and solutions to help you connect successfully.

No Saved Passwords in Chrome Remotely: A Solution for Ubuntu 23.10 Users

Users of Ubuntu 23.10 encounter an issue where Google Chrome does not save passwords when used remotely. This article offers a potential solution to the problem.

Using Proportional Fonts with Emacs on Linux Mint: A Tech Support Guide

Learn how to use proportional fonts in Emacs with Evil-mode on Linux Mint. This tech support article covers configuring your terminal emulator to support proportional fonts and loading the necessary Emacs configuration file.

Udev Rules Don't Allow Ubuntu and NixOS to Sequence USB Resume for Lenovo ThinkPads

Users report issues with Lenovo ThinkPad T480 running Ubuntu 22.04 LTS and Lenovo ThinkPad X1 Carbon running NixOS not being able to sequence USB resumes for devices with vendor ID 0x36dc.

Determining Format of Uncompressed ZIP Files with ffmpeg: Handling Media Files in Archives

Learn how to use ffmpeg to determine the format of uncompressed ZIP files containing media files such as video.1.hevc and video2.mp4.

WireGuard on OMV: One-Way Connection Works, Configuration Adjustments

This article provides a solution for a one-way connection issue encountered when setting up WireGuard on OpenMediaVault (OMV). We'll discuss the required configuration adjustments to ensure a bidirectional connection.

Secure VirtualBox VM Encryption: Is Disked Image Encryption Supported?

Learn about VirtualBox disk image encryption, where the encryption key is stored, and if third parties can access your encrypted VM.

PSFTP Connection Automatically Closing: Keypress Issue

Experiencing PSFTP connections that close unexpectedly upon keypress? This article explores potential causes and solutions.

Cannot Access Website on Hosted Domain using Apache Route53 with EC2 Instance on GoDaddy

Users report issues accessing their websites hosted on an EC2 instance using Route53 after purchasing a domain on GoDaddy. This article outlines the steps to resolve this issue.

Doesn't 'etc/logrotate.d/tomcat-run.daily' take effect: Manual trigger?

This article discusses how to manually trigger the log rotation for Tomcat's catalina.out file using the 'etc/logrotate.d/tomcat-run.daily' configuration file.

Installing a Full Linux System: OrangePi vs. Raspberry Pi

Learn how to install a full Linux system on OrangePi and Raspberry Pi using Ubuntu and Fedora Workstation. Create USB installation images for a smooth setup process.

Understanding Fstab in Directory /etc/fstab for Root Directory and Partition Mounting in Linux

In this tech support article, we will explain the role of the Fstab file located in the /etc directory in mounting the root directory and partitions in a Linux operating system.

Troubleshooting Bash Script Error with Debian preseed dpkg-configure string during Unattended-Upgrades

This article provides solutions to common errors encountered when running Bash scripts to configure various packages using Debian preseed files during Unattended-Upgrades. The focus is on resolving issues related to the dpkg-configure string.

Enabling Linux to Use Desktop.ini Files

During file transfers between Windows and Linux systems, desktop.ini files are sometimes created. These files include useful metadata, such as icon folders. In Linux, you can enable the use of desktop.ini files to maintain file metadata during transfers.

Unsupported: Previewing HEIC Files on Synology NAS with Ranger FM

Users encounter issues previewing HEIC files on Synology NAS with Ranger FM. This article explains the cause and provides potential solutions.

Iptables Port Redirect Works Locally, Not Outside: A Tech Support Solution

A user reports that their server listens on port 23006 and wants to access it from outside using port 443. This tech support solution explains how to set up iptables for port redirection but notes that it only works locally and not outside the network.

Ubuntu 23.10: Error Updating Kernel (anbox-ashmem)

Users of Ubuntu 23.10 may encounter an error when attempting to update the kernel. This article discusses a specific error related to anbox-ashmem and provides potential solutions.

VLC Media Player: Fixing Command-Line Errors with 'AudioObjectAddPropertyListener' on macOS

Learn how to fix VLC media player command-line errors related to 'AudioObjectAddPropertyListener' on macOS.

Netcat Sends Extra Packets with v Flag: An Unexpected Behavior

When using Netcat 1.218 on Ubuntu 22.04 to generate test syslog packets, an unexpected behavior occurs: Netcat sends two additional packets containing letters. This article explains the cause and provides possible solutions.

Rotate Logs with Rsyslog Advanced Format: Syntax and Config

Learn how to rotate logs using Rsyslog advanced format with a simplified syntax and configuration example.

Preventing MPV from Clearing the Terminal Screen after Video Playback

Learn how to prevent MPV from clearing the terminal screen after video playback on Linux systems.

Got WantoCry Virus on Samba Server? Here's What to Do

Learn how to identify and remove the WantoCry virus from your Samba server. Secure your system and prevent future attacks.

Using External Server UID instead of Username in AWS ParallelCluster

In this tech support article, we will guide you on how to use an External Server UID instead of a username in AWS ParallelCluster. This can be useful when dealing with license managers that require specific UIDs.

Speeding up Video: FFmpeg-based Timestamps for CSV

Learn how to use FFmpeg to speed up videos by adjusting timestamps and save the results in a CSV file.

Using zsh alias with echo and zshalias parameter in MacOS

In this tech support article, we will explain how to use an alias with echo and zshalias parameter in zsh shell on MacOS. We will provide step-by-step instructions to set up the alias without quoting, using single or double quotes, and without brackets or variables.

Video Wallpaper Spanning Across Dual Monitors on Arch Linux

Looking for a tool to set video wallpaper spanning across dual monitors on Arch Linux? Here are some suggestions.

Error Installing Fedora MediaWriter on Linux Mint 19.3

This article provides a solution to an error encountered during the installation of Fedora MediaWriter on Linux Mint 19.3.

Command Prompt Displays Incorrect Position on tmux Screen

Users of the tmux terminal multiplexer report that the command prompt window sometimes appears at the bottom of the screen instead of its usual position. This article explains how to fix the issue and ensure the command prompt remains in the desired location.

Best Deployment: Execution System for Highly Secure Hadoop Clusters

A noob Ansible user needs guidance on collecting info on nodes within a Hadoop cluster using long-running Python agents. Code necessary for secure deployment and execution systems is discussed.

Debug Folder No Permission in Kali Linux for OpenSSL Programs

This article explains how to grant necessary permissions to the debug folder in Kali Linux for OpenSSL programs that fail to run due to insufficient permissions.

Troubleshooting Nginx Compilation Error: Makefile Error 127

This article provides a solution to the Nginx compilation error with Makefile Error 127. The error message may not be clear, but it usually indicates a problem with the OpenSSL library during the compilation process.

SSH Jump Host: Access Server B via SSH from Server C

Learn how to access Server B from Server C using SSH as a jumphost. Discover the process of making Server C's address (addressC.internal) accessible to Server B via SSH.

Unable to update Kalilinux (Debian) with apt-get: Error and Solution

Learn how to troubleshoot and fix apt-get update errors when updating Kalilinux (Debian) systems.

Docker (Compose) Support for Pure L1 L2 Networking in Mini Internet Project

Learn how to configure Docker (Compose) for pure L1 L2 networking in a mini internet project. Create a custom network environment with hosts, routers, DHCP, DNS, TLS, and more.

Creating a New User with Dockerfile: adduser --disabled-password

In this tech support article, we will guide you through the process of creating a new user 'foo' using a Dockerfile with the 'adduser' command and the '--disabled-password' option.

FFmpeg Hardware Scale Error with CUDA on Ubuntu 22.04

Users of Ubuntu 22.04 with a NVIDIA GeForce graphic card and CUDA installation are encountering a FFmpeg hardware scale error. This article explains the cause and provides a solution.

Restricting Users from Specific Domains in QEMU/Libvirt without Polkit

In this article, we will discuss how to restrict users from accessing specific domains in QEMU and Libvirt without using Polkit.

iSCSI Connection Timeout during Ubuntu Server (22.04.3 LTS) Booting with Veeam Repository

This article discusses a common issue encountered during the boot process of an Ubuntu Server (22.04.3 LTS) when trying to connect to NetApp storage via iSCSI using Veeam Repository. The setup goes smoothly until the server reboots, causing a timeout.

Automating Telegram Notifications with Bash Script on Ubuntu Server

Learn how to automate Telegram notifications using a Bash script on an Ubuntu server. This tutorial covers setting up the Telegram API and creating a script to send notifications based on system data.

PS-U Command Not Listing Expected Processes for User 0x00

This article explains the issue encountered when using the PS-U command on a Linux system, which does not list the expected processes for user 0x00, despite the root processes being listed. The article suggests potential solutions and troubleshooting steps.

Differences in MC (Midnight Commander) Treeview Order for Folder Roots in Bash, Linux, and PowerShell